diff --git a/proparse/src/main/antlr4/org/prorefactor/proparse/antlr4/Proparse.g4 b/proparse/src/main/antlr4/org/prorefactor/proparse/antlr4/Proparse.g4
index c585819b4..356fa180c 100644
--- a/proparse/src/main/antlr4/org/prorefactor/proparse/antlr4/Proparse.g4
+++ b/proparse/src/main/antlr4/org/prorefactor/proparse/antlr4/Proparse.g4
@@ -1640,7 +1640,7 @@ buttonOption:
   ;
 
 defineDatasetStatement:
-    DEFINE defineShare? ( PRIVATE | PROTECTED | STATIC )*
+    DEFINE defineShare? ( PRIVATE | PROTECTED | STATIC | SERIALIZABLE | NONSERIALIZABLE )*
     DATASET identifier
     namespaceUri? namespacePrefix? xmlNodeName? serializeName? xmlNodeType? SERIALIZEHIDDEN?
     REFERENCEONLY?
diff --git a/proparse/src/test/java/org/prorefactor/core/NewSyntaxTest.java b/proparse/src/test/java/org/prorefactor/core/NewSyntaxTest.java
index c8b105ab9..9747cf0f0 100644
--- a/proparse/src/test/java/org/prorefactor/core/NewSyntaxTest.java
+++ b/proparse/src/test/java/org/prorefactor/core/NewSyntaxTest.java
@@ -320,4 +320,10 @@ public void testTenantKeywords() {
   public void testShorthandOperators() {
     testNewSyntax("12.3/operators.p");
   }
+
+  @Test
+  public void testSerializable() {
+    testNewSyntax("12.x/SerDS.cls");
+  }
+
 }
diff --git a/proparse/src/test/resources/data/newsyntax/12.x/SerDS.cls b/proparse/src/test/resources/data/newsyntax/12.x/SerDS.cls
new file mode 100644
index 000000000..0fbe1205f
--- /dev/null
+++ b/proparse/src/test/resources/data/newsyntax/12.x/SerDS.cls
@@ -0,0 +1,9 @@
+class SerDS serializable:
+
+  define private serializable temp-table tt1 no-undo
+    field fld1 as integer
+    index idx1 is primary unique fld1.
+
+  define serializable dataset ds1 for tt1.
+
+end class.